diff mbox series

[U-Boot,RESEND,10/14] i.MX7ULP: Fix SPLL/APLL clock rate calculation issue

Message ID 20190722013941.30857-10-peng.fan@nxp.com
State Accepted
Commit eb6d2e5920fa518fc924025e1e7987cd0dde73ad
Delegated to: Stefano Babic
Headers show
Series [U-Boot,RESEND,01/14] imx: i.MX7ULP: add get_boot_device | expand

Commit Message

Peng Fan July 22, 2019, 1:25 a.m. UTC 
From: Ye Li <ye.li@nxp.com>

The num/denom is a float value, but in the calculation it is convert
to integer 0, and cause the result wrong.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 arch/arm/mach-imx/mx7ulp/scg.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/arch/arm/mach-imx/mx7ulp/scg.c b/arch/arm/mach-imx/mx7ulp/scg.c
index 85d726fe30..a28a2bc81b 100644
--- a/arch/arm/mach-imx/mx7ulp/scg.c
+++ b/arch/arm/mach-imx/mx7ulp/scg.c
@@ -503,7 +503,10 @@  u32 decode_pll(enum pll_clocks pll)
 
 		infreq = infreq / pre_div;
 
-		return infreq * mult + infreq * num / denom;
+		if (denom)
+			return infreq * mult + infreq * num / denom;
+		else
+			return infreq * mult;
 
 	case PLL_A7_APLL:
 		reg = readl(&scg1_regs->apllcsr);
@@ -532,7 +535,10 @@  u32 decode_pll(enum pll_clocks pll)
 
 		infreq = infreq / pre_div;
 
-		return infreq * mult + infreq * num / denom;
+		if (denom)
+			return infreq * mult + infreq * num / denom;
+		else
+			return infreq * mult;
 
 	case PLL_USB:
 		reg = readl(&scg1_regs->upllcsr);